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Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK)

Changsha,China,10.16-10.18,2010

ISBN: 978-1-935068-41-9 Scientific Research Publishing, USA

E-Book 2313pp Pub. Date: October 2010

Category: Chemistry & Materials Science

Price: $360

Title: Effects of Annealing on the Photoluminescence of Erbium-Doped Zinc Oxide Nanocrystalline
Source: Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK) (pp 63-66)
Author(s): Guo-li Song, Department of Physics, Harbin University, Harbin, China
Xiang-yun Fang, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China
Chun-yan Su, Department of Physics, Harbin University, Harbin, China
Abstract: In order to investigate the Effects of Annealing on the Photoluminescence of Erbium-doped Zinc Oxide Nanocrystalline and Energy transfer from excited states of ZnO hosts to doping Er3+ ions centers. Er3+-doped zinc oxide nanocrystalline powders were successfully prepared by chemical precipitation method at various annealing temperature from 500℃ to 900℃. Photoluminescence spectrum (PL), photoluminescence spectrum excitation(PLE) and X-ray diffraction pattern (XRD) of nanocrystalline ZnO:Er3+ with excitation wavelength 365nm are measured at room temperature. XRD pattern indicates that nanocrystalline ZnO:Er3+ has a hexagonal wurtzite structure and polycrystalline. The mean grain size of nanocrystalline ZnO:Er3+ were calculated with Debye-Scherrer formula. The luminescence process of Er3+-doped zinc oxide nanocrystalline was investigated by using PL and PLE. Emissions of S3/2（550nm）, 2H11/2（521nm）和4F5/2（456nm）of Er3+ ions were observed in wide visible band of ZnO. Relationship between PL Area of Integration of ZnO:Er3+ and annealing temperature were given. An energy transfer from excited states of ZnO hosts to doping Er3+ ions centers was disclosed by the fact that photoluminescence intensity of the peaks of nanocrystalline ZnO:Er3＋changed with the Annealing temperature , and the another from the 4f-4f transition of Er3＋.
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